参数资料
| 型号： | LT1639CN#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 10/18页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP R-R IN/OUT QUAD 14-DIP |
| 标准包装： | 25 |
| 系列： | Over-The-Top® |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.4 V/µs |
| 增益带宽积： | 1.2MHz |
| 电流 - 输入偏压： | 20nA |
| 电压 - 输入偏移： | 350µV |
| 电流 - 电源： | 205µA |
| 电流 - 输出 / 通道： | 40mA |
| 电压 - 电源，单路/双路(±)： | 2.5 V ~ 44 V，±1.25 V ~ 22 V |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 通孔 |
| 封装/外壳： | 14-DIP（0.300"，7.62mm） |
| 供应商设备封装： | 14-PDIP |
| 包装： | 管件 |
LT1638/LT1639
18
16389fg
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com
LINEAR TECHNOLOGY CORPORATION 1998
LT 1011 REV G PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER
DESCRIPTION
COMMENTS
LT1078/LT1079
LT2078/LT2079
Dual/Quad 55μA Max, Single Supply, Precision Op Amps
Input/Output Common Mode Includes Ground, 70μV VOS(MAX)
and 2.5μV/°C Drift (Max), 200kHz GBW, 0.07V/μs Slew Rate
LT1178/LT1179
LT2178/LT2179
Dual/Quad 17μA Max, Single Supply, Precison Op Amps
Input/Output Common Mode Includes Ground, 70μV VOS(MAX)
and 4μV/°C Drift (Max), 85kHz GBW, 0.04V/μs Slew Rate
LT1366/LT1367
Dual/Quad Precision, Rail-to-Rail Input and Output Op Amps
475μV VOS(MAX), 500V/mV AVOL(MIN), 400kHz GBW
LT1490/LT1491
Dual/Quad Over-The-Top Micropower, Rail-to-Rail Input and
Output Op Amps
Single Supply Input Range: – 0.4V to 44V, Micropower 50μA
per Amplier, Rail-to-Rail Input and Output, 200kHz GBW
LT1636
Single Over-The-Top Micropower Rail-to-Rail Input and Output
Op Amp
55μA Supply Current, VCM Extends 44V above VEE,
Independent of VCC; MSOP Package, Shutdown Function
The battery monitor in Figure 5 also demonstrates the
LT1638’s ability to operate with its inputs above the
positive rail. In this application, a conventional amplier
would be limited to a battery voltage between 5V and
ground, but the LT1638 can handle battery voltages as
high as 44V. When the battery is charging, Amp B senses
the voltage drop across RS. The output of Amp B causes
Q2 to drain sufcient current through RB to balance the
input of Amp B. Likewise, Amp A and Q1 form a closed
loop when the battery is discharging. The current through
Q1 or Q2 is proportional to the current in RS and this cur-
rent ows into RG and is converted into a voltage. Amp
D buffers and amplies the voltage across RG. Amp C
compares the output of Amp A and Amp B to determine
the polarity of current through RS. The scale factor for
VOUT with S1 open is 1V/A. With S1 closed the scale
factor is 1V/100mA and currents as low as 500μA can
be measured.
RA, 2k
Q2
2N3904
S1
S1 = OPEN, GAIN = 1
S1 = CLOSED, GAIN = 10
RA = RB
VS = 5V, 0V
10k
90.9k
VOUT
LOGIC
1638/39 F05
LOGIC HIGH (5V) = CHARGING
LOGIC LOW (0V) = DISCHARGING
RG
10k
Q1
2N3904
RS, 0.2Ω
CHARGER
VOLTAGE
RA', 2k
RB', 2k
RB, 2k
VBATT = 12V
IBATT
+
LOAD
VOUT
(RS)(RG/RA)(GAIN)
VOUT
GAIN
IBATT =
=
AMPS
–
+
A
1/4 LT1639
–
+
B
1/4 LT1639
–
+
C
1/4 LT1639
–
+
D
1/4 LT1639
Figure 5. Battery Monitor
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1639CS | 功能描述:IC OPAMP R-R IN/OUT QUAD 14SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 标准包装:50 系列:- 放大器类型:J-FET 电路数:2 输出类型:- 转换速率:3.5 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:30pA 电压 - 输入偏移:2000µV 电流 - 电源:200µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作温度:0°C ~ 70°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 |
| LT1639CS#PBF | 功能描述:IC OPAMP R-R IN/OUT QUAD 14SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| LT1639CS#TR | 功能描述:IC OPAMP R-R I/O QUAD 14SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.028 V/µs 增益带宽积:105kHz -3db带宽:- 电流 - 输入偏压:3nA 电压 - 输入偏移:100µV 电流 - 电源:3.3µA 电流 - 输出 / 通道:12mA 电压 - 电源，单路/双路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:剪切带 (CT) 其它名称:OP481GRUZ-REELCT |
| LT1639CS#TRPBF | 功能描述:IC OPAMP R-R IN/OUT QUAD 14SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:Over-The-Top® 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.028 V/µs 增益带宽积:105kHz -3db带宽:- 电流 - 输入偏压:3nA 电压 - 输入偏移:100µV 电流 - 电源:3.3µA 电流 - 输出 / 通道:12mA 电压 - 电源，单路/双路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:剪切带 (CT) 其它名称:OP481GRUZ-REELCT |
| LT1639CSPBF | 制造商:Linear Technology 功能描述:Op Amp Dual Micropower RRIO 1.2MHz SO14 |
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